The trope directly taps into the 19th-century artistic concept of —the feeling of awe mixed with terror when confronting the vastness of nature and history. It reminds the audience of their own mortality, yet offers a strange comfort in the beauty of sadness ( mono no aware ). Existential Resonance
"You came back," the boy said.
"Give up," the boy whispered, appearing directly in front of him, the black sword raised. "Rest is here."